Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Igneous, Sedimentary, Metamorphic, Mineral
Browse igneous, sedimentary, metamorphic, mineral specimens identified by the Rock Identifier community.
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Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
mineral
Quartz (Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
mineral
Greenschist
Greenschist (Chlorite-Epidote-Actinolite Schist)
metamorphic
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine)
Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Garnet (Almandine/Pyrope series)
Garnet Group - X3Y2(SiO4)3
mineral
River Cobble (Salt and Pepper Gneiss)
Gneiss (High-grade regional metamorphic rock)
metamorphic
Greenstone / Metagraywacke
Metamorphosed basaltic or sedimentary rock (Complex Silicate)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Metamorphic Rock (Gneissic texture)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Gneiss (Metamorphosed Pebble)
Gneiss with Quartz/Feldspar banding
metamorphic
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Raw and Water-worn)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz with Sulfide Inclusions
Silicon Dioxide (SiO2) with metallic mineral inclusions
mineral
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Quartz Vein in Schist
Quartz-rich Micaceous Schist (SiO2 + phyllosilicates)
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Foliated Gneiss (River-Worn Pebble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
River Rock (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic
Mixed Rock and Mineral Collection
Mixed Assemblage (includes Quartz, Jasper, Feldspar, and Turquoise-colored stones)
mineral
Gneiss
Gneiss
metamorphic
Kfeldspar (Potassium Feldspar)
KAlSi3O8
mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Chalcopyrite
CuFeS2 (Copper Iron Sulfide)
mineral
Gneiss
Gneiss
metamorphic